Manuel Gallegos y Baca, of this city, died at his home last Sunday morning, and the funeral ceremony and burial took place the following day. The deceased was born at Belen, January 1st 1819, and came to Socorro in the early thirties. He was married in 1840 to Maria Quitira Garcia, who died about two years ago. They had ten chidren of whom seven survive, viz: Manuel, Fernando, Florentino, Felicitas, Juanita, Martin and Emilia, who are all married.
Source: Obituary: Manuel Gallegos y Baca, The Chieftain (Socorro, New Mexico), 12 March 1897; online archives (http://chroniclingamerica.loc.gov : accessed 30 December 2015).
You can access the obituary here.
I did a little bit of research, and was able to find some information about his and his wife's ancestry. Below I show that ancestry through their daughter Maria Dolores Gallegos. I have particular interest in this family because one of their descendants Eloisa Stackpole married my great granduncle Ricardo Zimmerly. Click on the links below to see descendant and ancestry charts of this family.
Descendants of Manuel Gallegos
Ancestors of Maria Dolores Gallegos
Correction: My distant cousin M.W.H. pointed out on Facebook that I forgot to mention that Manuel Gallegos' grandson Herminio Torres also married a Zimmerly, my great grandaunt Gertrudes Zimmerly. This is true. I actually have him listed in the "Descendants of Manuel Gallegos" report above, but I forgot to mention him specifically in this post. Sorry! - Robert J.C. Baca, 1 January 2017.